Gallienus (Publius Licinius Egnatius Gallienus; r. 253–268 CE) was born about 218 CE (Wickert, 1926, 84, 350–352). He was the son of Valerian I and Mariniana and was confirmed by the Roman Senate as Augustus and co-emperor when Valerian was approved in 253 CE. Valerian placed Gallienus in charge of the western provinces when he left Rome to command the armies in the eastern provinces and defend against incursions of the Persians, Goths, and other tribes. Gallienus married Cornelia Salonina, and the couple apparently had three…